Direct immunofluorescence test is used to detect unknown antigen in a cell or tissue by employing a known labeled antibody that interacts directly with unknown antigen. If antigen ...

Precipitation Curve (Prozone and Postzone) On either side of the equivalence zone, precipitation is actually prevented because of an excess of either antigen or antibody. In the case ...

 

In direct immunofluroscence the object is visualized using a fluorescein-ragged antibody directed against epitopes on the microorganism or antigen